WaiChunLeetCode Running-Sum-Of-1D-ArrayGiven an array nums. We define a running sum of an array as runningSum[i] = sum(nums[0]…nums[i]).1 min read·Mar 18, 2021----
WaiChunLeetCode Longest Common Prefix JavaWrite a function to find the longest common prefix string amongst an array of strings.1 min read·Mar 7, 2021----
WaiChunLeetCode Two Sum JavaGiven an array of integers nums and an integer target, return indices of the two numbers such that they add up to target.1 min read·Mar 6, 2021----
WaiChunOperate And Manage A Relational Database On The CloudUnderstand the basic concepts of RDS, the benefits of using it compared to a conventional database solution and the key features of our…2 min read·Jun 19, 2020----
WaiChunWhat and Why RESTFULBefore talk about RESTFUL, we have to understand what is REST.2 min read·Jun 15, 2020----
WaiChunHow Ant Financial acquire stake in local digital walletThe China based payments company Ant Financial, which belong to AliPay had start to acquire digital wallet in South East Asia by joint…2 min read·May 27, 2020----
WaiChunSummary of VO, DTO, DO, BO …In system architecture, each level have their own define object type. Here will briefly explain each of the level object using the most…2 min read·May 25, 2020----